regarding mc68hc11e9

Started by Pratik Patel in M68HC1112 years ago 6 replies

hi there i m using 68hc11e9 to develop a robot. up to now i have finished testing my robot. now i need to run it without connected to com1...

hi there i m using 68hc11e9 to develop a robot. up to now i have finished testing my robot. now i need to run it without connected to com1 port of computer. i m writing code to EEPROM. is there any jumper setting for this? pls advice soon. thanks


Clearing BPROT

Started by Daniel Bull in M68HC1112 years ago 4 replies

Hello - My project uses the 68HC11F1 in expanded mode. I have tried to clear the BPROT register with no success. I modified the startup code...

Hello - My project uses the 68HC11F1 in expanded mode. I have tried to clear the BPROT register with no success. I modified the startup code with the lines ldaa #00; staa BPROT (or $1035) just after initializing the stack pointer. This should execute within the first 64 clock cycles. When I run the program the register does not change. The register reads as 0x1F, which is the defau...


68hc11 interface with pci bus

Started by addicted6220 in M68HC1112 years ago 23 replies

hi everybody, i am rookie in this area (microcontroller). I wanted to=20 build a circuit that microcontroller(68hc11) based connected to...

hi everybody, i am rookie in this area (microcontroller). I wanted to=20 build a circuit that microcontroller(68hc11) based connected to motor.=20 The idea was to control the motor from PC through PCI-bus that=20 interface to microcontroller. so anybody out there, please help me with this? because i am really=20 lost... tell me everything... ------------------------ Yahoo! Groups Sponsor...


Axman hc11e9-evbu

Started by yklein2004 in M68HC1112 years ago 3 replies

I wrote a program in C (ICC11) on the 68hc11e9-evbu. I run and rested the board about 20 times and every time the code was working fine. after...

I wrote a program in C (ICC11) on the 68hc11e9-evbu. I run and rested the board about 20 times and every time the code was working fine. after about 20 times I could not run the program again. I don't know if it a memory issue. Please help


EXTERNAL FLASH EEPROM PROGRAMMING

Started by chuc...@yahoo.com in M68HC1112 years ago 2 replies

Hello everyone. I've got a problem that I've been trying to figure out for some time now, and I have yet to find good information regarding the...

Hello everyone. I've got a problem that I've been trying to figure out for some time now, and I have yet to find good information regarding the topic. I'm trying to program an EXTERNAL FLASH EEPROM chip that I have added to the M68HC11EVBU board, circa 1990. It used to have a HC11E9 chip in there, but the person I got the board from burned it up and got a E1 as a replacement. I know that ...


Re: HC711 pinout

Started by BobG...@aol.com in M68HC1112 years ago 5 replies

Mike & Bob.... I think keeping the EVs with the HC11s updated is a good project... I have used many different HC11 variants and written several...

Mike & Bob.... I think keeping the EVs with the HC11s updated is a good project... I have used many different HC11 variants and written several little bootable programs that get downloaded to HC11 ram at poweron to test ram and rom, test the ports by flashing pins etc. You should look at the programs supplied by Technological Arts with their HC11 microstamps... there is asm source t...


MicroStamp11 Init Problems?!?

Started by purplehazedjimi in M68HC1112 years ago 8 replies

Hey All, The problem I am having with my 6811 involves some form of initialization, I think. The problem, specifically, is this: when I...

Hey All, The problem I am having with my 6811 involves some form of initialization, I think. The problem, specifically, is this: when I remove the microcontroller from the dev board (which also removes power) my Port A (PA4-PA6) lines stop working. When power is reapplied, I can verify the code is still running, i.e. all other lines continue to function properly, but the port A lines ...


Re: HC711 pinout

Started by Mike McCarty in M68HC1112 years ago 15 replies

Mike Phillips wrote: > Mine is the plcc 84. Yes, I see that you actually posted that information in your first message. Sorry to overlook...

Mike Phillips wrote: > Mine is the plcc 84. Yes, I see that you actually posted that information in your first message. Sorry to overlook that. > I'm not troubled at all that the onboard connector > cannot program the chip. Then I don't understand what your question is. I suggested that you program the chips before installing them on the board, and you seemed to reject that. > I


External RAM and EEPROM

Started by chuc...@yahoo.com in M68HC1112 years ago 2 replies

Hello everyone, I have a question regarding the M68HC11EBVU. Its the old board from the 90's with the mc68hc11e1 chip in place of the e9. I've...

Hello everyone, I have a question regarding the M68HC11EBVU. Its the old board from the 90's with the mc68hc11e1 chip in place of the e9. I've installed a 32k SRAM chip and a 128k EEPROM chip on the wirewrap side and I've been wondering on how to interface it correctly so that I can program the external EEPROM via the MCU. I've never used any other software such as pcbug11 etc. How can ...


Questions on Reprogramming MC68C711E9CFN2 chip

Started by Rakesh Krishnan in M68HC1112 years ago 2 replies

Hi All =20=20=20 When i programmed the MC68HC711E9CFN2 Chip with a Version A of Software (= .S19) it programmed sucessfully. I made some...

Hi All =20=20=20 When i programmed the MC68HC711E9CFN2 Chip with a Version A of Software (= .S19) it programmed sucessfully. I made some modifications in the Version A= Software and made it to Version B and created S19 for version B software. = When i tried reprogramming Version B S19 to the same chip MC68HC711E9CFN2 w= hich contains the version A software, I AM NOT ABLE TO REPROGRAM THE ...


Ask a Question to the EmbeddedRelated community

To significantly increase your chances of receiving answers, please make sure to:

  1. Use a meaningful title
  2. Express your question clearly and well
  3. Do not use this forum to promote your product, service or business
  4. Write in clear, grammatical, correctly-spelled language
  5. Do not post content that violates a copyright